Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 163 insertions, 0 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/binding.c b/drivers/net/wireless/intel/iwlwifi/mvm/binding.c
new file mode 100644
index 000000000..0aac30630
--- /dev/null
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/binding.c
@@ -0,0 +1,163 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
+/*
+ * Copyright (C) 2012-2014, 2020 Intel Corporation
+ * Copyright (C) 2016 Intel Deutschland GmbH
+ */
+#include <net/mac80211.h>
+#include "fw-api.h"
+#include "mvm.h"
+
+struct iwl_mvm_iface_iterator_data {
+	struct ieee80211_vif *ignore_vif;
+	int idx;
+
+	struct iwl_mvm_phy_ctxt *phyctxt;
+
+	u16 ids[MAX_MACS_IN_BINDING];
+	u16 colors[MAX_MACS_IN_BINDING];
+};
+
+static int iwl_mvm_binding_cmd(struct iwl_mvm *mvm, u32 action,
+			       struct iwl_mvm_iface_iterator_data *data)
+{
+	struct iwl_binding_cmd cmd;
+	struct iwl_mvm_phy_ctxt *phyctxt = data->phyctxt;
+	int i, ret;
+	u32 status;
+	int size;
+
+	memset(&cmd, 0, sizeof(cmd));
+
+	if (fw_has_capa(&mvm->fw->ucode_capa,
+			IWL_UCODE_TLV_CAPA_BINDING_CDB_SUPPORT)) {
+		size = sizeof(cmd);
+		cmd.lmac_id = cpu_to_le32(iwl_mvm_get_lmac_id(mvm->fw,
+							      phyctxt->channel->band));
+	} else {
+		size = IWL_BINDING_CMD_SIZE_V1;
+	}
+
+	cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(phyctxt->id,
+							   phyctxt->color));
+	cmd.action = cpu_to_le32(action);
+	cmd.phy = cpu_to_le32(FW_CMD_ID_AND_COLOR(phyctxt->id,
+						  phyctxt->color));
+
+	for (i = 0; i < MAX_MACS_IN_BINDING; i++)
+		cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
+	for (i = 0; i < data->idx; i++)
+		cmd.macs[i] = cpu_to_le32(FW_CMD_ID_AND_COLOR(data->ids[i],
+							      data->colors[i]));
+
+	status = 0;
+	ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
+					  size, &cmd, &status);
+	if (ret) {
+		IWL_ERR(mvm, "Failed to send binding (action:%d): %d\n",
+			action, ret);
+		return ret;
+	}
+
+	if (status) {
+		IWL_ERR(mvm, "Binding command failed: %u\n", status);
+		ret = -EIO;
+	}
+
+	return ret;
+}
+
+static void iwl_mvm_iface_iterator(void *_data, u8 *mac,
+				   struct ieee80211_vif *vif)
+{
+	struct iwl_mvm_iface_iterator_data *data = _data;
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+
+	if (vif == data->ignore_vif)
+		return;
+
+	if (mvmvif->phy_ctxt != data->phyctxt)
+		return;
+
+	if (WARN_ON_ONCE(data->idx >= MAX_MACS_IN_BINDING))
+		return;
+
+	data->ids[data->idx] = mvmvif->id;
+	data->colors[data->idx] = mvmvif->color;
+	data->idx++;
+}
+
+static int iwl_mvm_binding_update(struct iwl_mvm *mvm,
+				  struct ieee80211_vif *vif,
+				  struct iwl_mvm_phy_ctxt *phyctxt,
+				  bool add)
+{
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+	struct iwl_mvm_iface_iterator_data data = {
+		.ignore_vif = vif,
+		.phyctxt = phyctxt,
+	};
+	u32 action = FW_CTXT_ACTION_MODIFY;
+
+	lockdep_assert_held(&mvm->mutex);
+
+	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
+						   IEEE80211_IFACE_ITER_NORMAL,
+						   iwl_mvm_iface_iterator,
+						   &data);
+
+	/*
+	 * If there are no other interfaces yet we
+	 * need to create a new binding.
+	 */
+	if (data.idx == 0) {
+		if (add)
+			action = FW_CTXT_ACTION_ADD;
+		else
+			action = FW_CTXT_ACTION_REMOVE;
+	}
+
+	if (add) {
+		if (WARN_ON_ONCE(data.idx >= MAX_MACS_IN_BINDING))
+			return -EINVAL;
+
+		data.ids[data.idx] = mvmvif->id;
+		data.colors[data.idx] = mvmvif->color;
+		data.idx++;
+	}
+
+	return iwl_mvm_binding_cmd(mvm, action, &data);
+}
+
+int iwl_mvm_binding_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
+{
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+
+	if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
+		return -EINVAL;
+
+	/*
+	 * Update SF - Disable if needed. if this fails, SF might still be on
+	 * while many macs are bound, which is forbidden - so fail the binding.
+	 */
+	if (iwl_mvm_sf_update(mvm, vif, false))
+		return -EINVAL;
+
+	return iwl_mvm_binding_update(mvm, vif, mvmvif->phy_ctxt, true);
+}
+
+int iwl_mvm_binding_remove_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
+{
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+	int ret;
+
+	if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
+		return -EINVAL;
+
+	ret = iwl_mvm_binding_update(mvm, vif, mvmvif->phy_ctxt, false);
+
+	if (!ret)
+		if (iwl_mvm_sf_update(mvm, vif, true))
+			IWL_ERR(mvm, "Failed to update SF state\n");
+
+	return ret;
+}